Binary Compounds NaCl sodium chlor ine ide (Na1+ Cl1-) CaS He 2 C 6 N 7 O 8 F 9 Ne 10 B 5 H 1 Al 13 Si 14 P 15 S 16 Cl 17 Ar 18 Sc 21 Ti 22 V 23 Cr 24 Mn 25 Fe 26 Co 27 Ni 28 Cu 29 Zn 30 Ga 31 Ge 32 As 33 Se 34 Br 35 Kr 36 Y 39 Zr 40 Nb 41 Mo 42 Tc 43 Ru 44 Rh 45 Pd 46 Ag 47 Cd 48 In 49 Sn 50 Sb 51 Te 52 I 53 Xe 54 Hf 72 Ta 73 W 74 Re 75 Os 76 Ir 77 Pt 78 Au 79 Hg 80 Tl 81 Pb 82 Bi 83 Po 84 At 85 Rn 86 Li 3 Na 11 K 19 Rb 37 Cs 55 Fr 87 Rf 104 Db 105 Sg 106 Bh 107 Hs 108 Mt 109 Be 4 Ca 20 Sr 38 Ba 56 Ra 88 Mg 12 * 2+ 3+ 1+ 2+ Binary compounds that contain a metal of fixed oxidation number (group 1, group 2, Al, Zn, Ag, etc.), and a non-metal. To name these compounds, give the name of metal followed by the name of the non-metal, with the ending replaced by the suffix –ide. Examples: NaCl sodium chlor ine ide (Na1+ Cl1-) CaS calcium sulf ur ide (Ca2+ S2-) AlI3 aluminum iod ide ine (Al3+ I1-) 3

Common Simple Cations and Anions Cation Name Anion Name* H 1+ hydrogen H 1- hydride Li 1+ lithium F 1- fluoride Na 1+ sodium Cl 1- chloride K 1+ potassium Br 1- bromide Cs 1+ cesium I 1- iodide Be 2+ beryllium O 2- oxide Mg 2+ magnesium S 2- sulfide Al 3+ aluminum Ag 1+ silver *The root is given in color. Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 86

Molecular Compound A compound containing atoms of two or more elements that are bonded together by sharing electrons. Quartz (silicon dioxide) is the most common mineral species in the earth's crust. http://www.minvision.com/mvpics/0275331001148477692730993.jpg http://ftp.gnome.org/pub/GNOME/teams/art.gnome.org/backgrounds/NATURE-QuartzSand_1024x768.jpg Silicon dioxide, SiO2, is a molecular compound. It is also a mineral called quartz (left). Quartz is found in nearly every type of rock. Most sand grains (center) are bits of quartz. Glass is made from sand.